Ventilation of two-storey civil building

Contents

1 Initial data

1.1 Characteristics of the object

1.2 Design parameters of outdoor air

1.3 Design parameters of internal air

2 Calculation of hazards entering the auditorium

2.1 Calculation of heat inputs

2.1.1 Heat inputs from people

2.1.2 Heat inputs from artificial lighting sources

2.1.3 Heat emissions from solar radiation through the coating

2.1.4 Heat input from heating system

2.1.5 Heat loss through external fences

2.2 Calculation of moisture inputs

2.3 Calculation of Carbon Dioxide Inflow

2.4 Thermal balance of the room

3 Determination of air exchange in the auditorium

3.1 Air exchange in warm period

3.2 Cold air exchange

3.3 Selection of plenum unit

4 Calculation of air distribution in the auditorium

4.1 Selection of air terminals

4.2 Air recirculation in the auditorium

5 Ventilation systems equipment

5.1 Air intake and removal devices

5.1.1 Selection of louver screens

5.1.2 Selection of insulated valve

5.1.3 Selection of deflectors

6 Calculation of the plenum chamber of the auditorium

6.1 Calorifer section calculation

6.2 Filter section

6.3 Receiving Section

6.4 Connecting section

6.5 Selection of silencer

7 Air heat curtain

8 Air exchange of film projection and film rewinding

9 Determination of air exchange of auxiliary rooms of the club

10 Aerodynamic calculation of the plenum ventilation system of the club auditorium

Literature

1 Initial data

1.1 Characteristics of the object

It is necessary to design a ventilation system for a civilian building located in the city of Barnaul. The building is a club for 500 visitors, which has an auditorium for 400 spectators. Building dimensions: 36m28.2m. The walls of the building are made of brick. External finishing is made using PVC panels. As the heat carrier serves water with a temperature of Tg of =13070 wasps. In the auditorium, the heating system maintains a temperature of 16 ° C. In the remaining rooms, the heating system maintains the design air temperature depending on the purpose of the room. In the film projection, two film projectors are installed, from which local exhaust ventilation is provided. The source of artificial lighting is filament lamps equipped with local suction.

The club operates in the daytime and in the evening.

2 Calculation of hazards entering the auditorium

When calculating the hazards entering the auditorium, we will take into account such hazards as:

- Heat inputs from people, artificial lighting sources, solar radiation and heating system (in winter);

- ingress of moisture;

- carbon dioxide supply.

5.1 Air intake and removal devices

External air is supplied to the room through air intake devices. Air intake units typically include louver grilles with fixed louvres and valves (dampers) to prevent outside air from entering the rooms with non-operating plenum devices.

Air removal into the atmosphere should be provided through air ducts and shafts equipped with deflectors and roof fans.

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